Improvement in ink-fountains for printing-presses



Patented Aug.14,1877.

N. PETERi PHOTO LXTPOURA UNITED STATES PATENT OFFICE.

ANDREW CAMPBELL, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN INK-FOUNTAINS FOR PRlNTlNG-PRESSES.

Specification forming part of Letters Patent No. 194,218, dated August14, 1877; application filed October 24, 1876.

To all whom it may concern:

Be'it known that I, ANDREW CAMPBELL, of Brooklyn, in the county of Kingsand State of New York, have invented certain new and useful Improvementsin Ink-Fountains for Printing-Presses; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing bad to the accompanying drawings, making a part of thisspecification.

My invention relates to novel improvements in ink-fountains forprintingpresses.

It has for its objects controllinggthe flow of ink, and preventing theaccumulation of lint and dirt in the ink from lodging in the openingbetween the roller and the knife or doctor.

With these ends and objects in view, my invention consists, first, inmaking the movementof thefountain or bowl the means whereby the flow ofink is increased or diminished and, secondly, in making the scraper ordoctor with a rounded working-edge, as will be hereinafter more fullyset forth.

To enable those skilled to more fully understand the construction andoperation of my improved fountain, I will proceed to describe the same,referring by letters to the accompanying drawings, in which- Figure l isa vertical cross-section of an ink-fountain embodying the features of myinvention. Fig.2isasimilar section, on an enlarged scale, of the knifeand its bearings, showing the manner of adjusting the same; and Fig. 3is a section at the line as a, Fig. 1, showing the means by which thefountain or bowl is made to control the flow of ink.

Similar letters indicate like-parts in the several views.

A represents the fountain or bowl, pivoted at a to a suitable frame, B,and directly over the ink-roller G, and adapted to rock upon the pivotor bearing at a by means of a suitable eccentric or lever, as shown atD; or it may be made to move bodily in a vertical line by suitableguides and levers, which any mechanic could readily substitute for theeccentrio lever and pivoted bearing shown.

The escape of ink at the back of the fountain is prevented or avoided inthe usual way.

E is a knife or doctor, arranged in the foot of the front of thefountain or bowl, and adapted to be adjusted so as to bring it in properand variable relations with the periphery of the ink-roll by means ofset-screws F.

The knife or doctor E is rounded at its forward or working edge, inorder that if in contact with the inking-roll such contact would be onlytangential, or such as exists between two circles, the object of suchconstruction being to prevent the accumulation of dirt or lint from thepaper which Works itself into the ink-fountain, and which, in fountainsprovided with the ordinary knife, lodges above the edge of the knife,and between it and the roll, retarding the flow of ink, andnecessitating the use of a moving comb, or the throwing away of largequantities of dirty ink.

The form of knife shown at E permits th dirt and lint to pass freelythrough, and it accumulates upon the composition roll, from which it canbe readily removed; and being removable, its forward rounded edge may bereground at any time it may become worn concen trio with the perimeterof the ink-roll G.

I have shown in dotted lines at Fig. 1 the ink fountain or bowl as swungupon its center a, to change its relation to the ink-roll O. The sameeffect may be produced by use of the cam or eccentric shown at D.

What I claim as new, and desire to secure by Letters Patent, is--.

1. In combination with the ink-roll G, the

ink-bowl A, hung above the roller, as described, whereby a vibratorymovement of the bowl may obtain for the purpose of controllin the flowof ink, substantially as herein described.

2. In combination with an ink-fountain, an independent adjustable andremovable scraper or doctor, having its forward edge rounded,substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand and seal this 10th dayof October, 1876.

ANDREW CAMPBELL.

Witnesses:

A. O. CAMPBELL, 'lnos. TRUsLow.

